In This Article
Short answer, best by need: Pick Mimo for coding, Memrise or Quizlet for languages, Yousician for an instrument, and Khan Academy when you want a serious, genuinely free study library. Most of these run free with a paid tier on top, so match the app to the subject first and worry about the subscription second.
A phone is the most patient teacher most of us own. It sits in a pocket through the commute, the queue, the ten dead minutes before a meeting, and any one of those gaps is enough to learn a verb, debug a loop, or run a few flashcards. The Play Store is stacked with apps that promise exactly that, which is the problem: too many of them, and no easy way to tell the serious tools from the ones that fizzle out after a week.
So we cut it down to twelve apps worth keeping, spread across languages, coding, music, science, study and reading. For each one we note who it actually suits and what it costs now, because the pricing on a lot of these has shifted since they launched. Skim the comparison table first, then jump to the section for whatever you are trying to learn.
A quick word on price. Almost every app here is free to download, and several stay genuinely useful for free. Others now gate the good stuff behind a subscription, and a couple have quietly tightened their free tiers over the past year. We have flagged that case by case rather than calling everything “free” and leaving you to find the paywall yourself.
| App | Best for | Free or paid |
|---|---|---|
| Peak | Daily brain training | Free, Pro subscription |
| Mimo | Learning to code | Free, Pro subscription |
| Stellarium | Stargazing and astronomy | Free, Plus upgrade |
| Yousician | Guitar, piano and more | Free trial, then paid |
| Skillshare | Creative skills | Subscription |
| Khan Academy | School subjects, all ages | Free, nonprofit |
| Quizlet | Flashcards and revision | Free tier, Plus for the rest |
| Memrise | Languages with real speech | Free, Pro subscription |
| Udemy | Specific career courses | Pay per course |
| LinkedIn Learning | Professional skills | Subscription, free trial |
| Moon+ Reader | Reading and study books | Free, Pro one-time |
| Goodreads | Tracking what you read | Free |
1. Peak, Brain Games and Training
Peak dresses cognitive training up as a set of quick games, and that is the whole trick: it feels like play, but the workouts target memory, attention, mental math, problem-solving and emotional control. The studio worked with researchers from Cambridge and NYU on the exercises, and the app adapts the difficulty as you improve so it never settles into busywork.
You get a daily set of games for free, plus a brain-map that compares your scores against other players, which is oddly motivating first thing in the morning. A Pro subscription unlocks the full game catalogue and detailed progress tracking. It will not make you smarter overnight, whatever the marketing implies, but as a two-minute warmup it earns its spot on the home screen.
Grab it from the Download from Play Store listing.
2. Mimo, Learn to Code
Mimo makes the case that you can pick up real programming in the gaps of a normal day, and it mostly delivers. Lessons come in short, interactive chunks across Python, JavaScript, HTML, CSS, SQL, Kotlin, Swift and more, so you are typing actual code within the first session rather than reading theory for a week.
It leans on streaks, badges and a personalized path to keep you coming back, and the community now runs into the millions of learners. That gamified loop is the strength and the catch: it is brilliant for building a daily habit and getting comfortable with syntax, less so for the deep, project-heavy work you will eventually need. Treat it as the on-ramp, not the whole road. The core lessons are free, with a Pro subscription unlocking the full curriculum and certificates.
Start coding from the Download from Play Store page.
3. Stellarium Sky Map
Point your phone at the night sky and Stellarium names everything you are looking at. The free Stellarium Mobile edition renders a real-time, zoomable map of hundreds of thousands of stars, the Milky Way, and 3D models of the planets and their moons, all tracking your location and the time of night.
It is the rare app that is both a genuine learning tool and a quietly beautiful thing to scroll through. The free version covers most casual stargazing; a Stellarium Plus upgrade adds far larger star catalogues and telescope control for anyone who gets properly hooked, and the free app stays actively maintained.
Install it from the Download from Play Store page.
4. Yousician, Music Education
Yousician listens through your phone’s mic while you play guitar, piano, bass or ukulele, then tells you in real time whether you hit the note and held the timing. That instant feedback loop is what sets it apart from watching tutorial videos, and the curriculum, built by music teachers, scales from your first chord to fairly advanced material.
Lessons, videos, exercises and a dose of music theory are all bundled in, with weekly challenges against the wider community for anyone who likes a leaderboard. You can try it on a limited free plan, but daily practice time is capped until you move to a paid subscription, so think of it as a structured course rather than a free toy.
Pick it up from the Download from Play Store listing.
5. Skillshare, Creative Classes
Skillshare is where you go to pick up a creative skill rather than a formal qualification. Its library runs to tens of thousands of classes in photography, design, illustration, video and the business side of creative work, almost all of them project-based, so you finish with something you actually made rather than a quiz score.
The model is a flat subscription that opens every class, plus community feedback and ratings to help you sort the strong teachers from the filler. There is no meaningful free tier anymore, though a trial lets you test-drive it. It suits the curious dabbler more than the spec-chasing professional, but for unblocking a creative rut it is hard to beat.
Browse the classes from the Download from Play Store page.
6. Khan Academy
| What you get | Khan Academy |
|---|---|
| Cost | Free, no subscription tier |
| Subjects | Math, science, economics, history, test prep |
| Level | School and early college, useful to adults too |
| How it teaches | Short videos plus adaptive mastery practice |
Khan Academy is the one app on this list with no catch. It is a 501(c)(3) nonprofit, funded by major philanthropic donors, and its entire library is free with no subscription waiting at the bottom of the menu. The catalogue spans math, science, economics, history and test prep, pitched mostly at school and early-college level but useful to anyone filling a gap.
The app mirrors the full web experience: short video lessons, practice sets that adapt to where you slip up, and progress tracking that actually shows mastery rather than just hours logged. If you only install one thing from this list and you have a subject to learn, make it this. You can read the nonprofit’s own account of how it stays free on the Khan Academy about page, and the Android app is a faithful copy of the full site.
Get it from the Download from Play Store listing.
7. Quizlet, Flashcards and Study Sets
If you learn by repetition, Quizlet is built for you. Make your own flashcard sets or pull from the millions other students have shared, then drill them with match games, written tests and audio pronunciation across a wide range of languages. It syncs with the web, so a set you build on a laptop is waiting on your phone.
One honest caveat: the free tier is thinner than it used to be. Quizlet has steadily moved its better features behind Quizlet Plus, with Learn mode rounds capped, a limit on how many active study sets you can keep, and the AI tools and practice tests now gated to the subscription. The basics still work for free, but heavy revisers will hit the ceiling and have to decide whether the upgrade is worth it.
Start studying from the Download from Play Store page.
8. Memrise, Learn Languages
Memrise has been rebuilt since its early days, and the new shape suits it. The app now runs on three pillars: Learn for the core vocabulary, Immerse for short clips of native speakers using the language for real, and Communicate, an AI chat partner called MemBot that lets you rehearse conversations without the nerves of talking to a stranger.
The old “learn with locals” mode and the sprawl of community-made courses are gone, folded into that tighter, more polished experience. What you get instead is a focused path through real spoken language rather than textbook phrases. Daily goals and a free tier keep the habit cheap to start; a Pro subscription opens the full course catalogue and the unlimited AI practice.
Begin from the Download from Play Store listing.
9. Udemy, Online Courses
Udemy is less a course and more a marketplace, with hundreds of thousands of video courses on everything from spreadsheets to game development. Anyone can teach, which means quality swings wildly, so the trick is to read the ratings and reviews before you buy rather than after.
You pay per course rather than by subscription, and Udemy runs frequent sales that knock list prices down hard, so it pays to wait for a discount. Once a course is yours it stays yours, with progress syncing across devices and direct messaging to ask instructors questions. For a specific, practical skill you can name, it is one of the best-value options on the list.
The full catalogue lives at Udemy, and you can install the app from the Download from Play Store page.
10. LinkedIn Learning
LinkedIn Learning is the professional-development hub that absorbed the old Lynda.com library years ago; the Lynda brand is fully retired now, so everything lives here. The catalogue runs to thousands of courses in business, software, creative and career skills, taught by working professionals and tied into your LinkedIn profile so completed courses show up as credentials.
The interface is clean and the playlists make it easy to build a structured path rather than wandering. You can download lessons for offline viewing and pick up where you left off across devices. It runs on a monthly subscription with a free trial, and it is often bundled into LinkedIn Premium, so check whether you already have access before paying twice.
See the full platform at LinkedIn Learning, or install it from the Download from Play Store page.
11. Moon+ Reader
Learning does not stop at courses, and Moon+ Reader earns its place as the reading half of a study routine. It is a powerful e-book reader that opens most common formats, connects to free online book libraries, and gives you deep control over fonts, spacing, themes and night mode, which matters when you are working through a dense textbook rather than a beach novel.
Highlighting, notes and a smooth scrolling engine make it a real tool for studying from PDFs and ebooks, not just casual reading. The free version is generous; a one-time Pro purchase removes ads and adds extras like text-to-speech and more layout options. If your learning involves reading long-form material, this is the app to keep it all in.
Download it from the Download from Play Store listing.
12. Goodreads
Goodreads rounds out the list on the social side of learning. It is the place to track what you have read, line up what is next, and find recommendations from a community that now runs well over a hundred million members. For anyone working through a reading list, a subject or a self-set challenge, that shared shelf turns solitary reading into something you can compare notes on.
Set a yearly reading goal, scan a cover to pull up reviews, keep a Want-to-Read shelf, and follow people whose taste you trust. It is free, owned by Amazon, and while the app design shows its age, nothing else has its sheer depth of reviews and ratings. Pair it with Moon+ Reader and you have both ends of a reading habit covered.
Get the app from the Goodreads site or directly via Download for Android.
How to pick the right one
Twelve apps is a lot, so start from the subject rather than the badge collection. The shortlist sorts itself out fast once you know what you are after:
- Languages: Memrise for real spoken practice with an AI partner, Quizlet for raw vocabulary drilling.
- Coding: Mimo for building a daily habit and getting fluent with syntax.
- School and exam subjects: Khan Academy, free top to bottom and built for mastery.
- A creative or career skill: Skillshare for project-based creativity, Udemy for one named skill, LinkedIn Learning for credentials.
- Music: Yousician for instant feedback on guitar, piano or bass.
- Reading and tracking: Moon+ Reader to study from, Goodreads to plan and share.
The honest move is to install one, not six. A single app you open every day beats a screen full of icons you swipe past with vague guilt. Pick the subject that matters most right now, commit to that one, and let the daily streak do the work. You can always add the next one once the habit sticks.
Want a couple of outside reads before you decide? Mimo shows up on the same shortlist of apps Android Authority’s writers lean on for daily learning, and Khan Academy’s nonprofit history on Wikipedia backs up why our best-value pick stays genuinely free.
